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Abandoning all principles Ted Cruz backs Donald Trump

Despite Donald Trump's attacks on Ted Cruz and his family, the Texas senator has abandoned his principles and endorsed Trump's candidacy.

Sen. Ted Cruz (R-Texas) speaks with Donald Trump during a Tea Party Patriots rally against the Iran nuclear deal on Capitol Hill in Washington, D.C., on Sept. 9, 2015. (Photo by Pete Marovich/Bloomberg/Getty)
Sen. Ted Cruz (R-Texas) speaks with Donald Trump during a Tea Party Patriots rally against the Iran nuclear deal on Capitol Hill in Washington, D.C., on Sept. 9, 2015.Bloomberg via Getty Images

Steve Benen is a producer for "The Rachel Maddow Show," the editor of MaddowBlog and an MS NOW political contributor. He's also the bestselling author of "Ministry of Truth: Democracy, Reality, and the Republicans' War on the Recent Past."